Spark-extinguisher and smoke-purifier



(No Model.)

T. W. BARNES.

-SPARK BXTINGUISHER AND SMOKE PURIFIBR.

No. 389,916.' l Patented Sept. 25, 1888.

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with the stack aforesaid.

`Nrrn rares Parenti* unica.

THOMAS V. BARNES, OF VASSAR, ASSIGNOR OF ONE-HALF TO JOHN G. TRUMP AND LEANHARD SCHUELL, OF RIOHVILLE, MICHIGAN.

SPARK-EXTINGUISHER AND SMOKE-'PURIFIER SPECIFICATION forming part of Letters Patent No. 389,916, dated September 25, 1888.

Application filed September 3, 1887. Serial No. 248.672. (No model.)

To all wtom it may concern-.-

Be it known that l, THOMAS W. BARNES, a citizen of the United States, residing at Vassar, in the county of Tuscola and State of Michigan, have invented certain new and useful Improvements in Spark Extinguishers and Smoke-Purifiers; and I do hereby declare the following` to bea full,clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same.

My invention is a sliiark-arrester and smoke.- purifier; and it consists in the parts which will be hereinafter specified, and pointed out in the claims.

In the accompanying drawing, the figure represents a central vertical section of a smelting-furnace provided with my improvement.

The objects of my invention are to eXtinguish the sparks which ascend withsmoke, to destroy the offensive odors arising` as the products of combustion, and to arrest and save the mineral substances which are usually lost in smoke, especially precious metals.

. The letter A represents the upperpart ofthe smoke-stack, and B the lower part thereof.

C represents an enlarged or drum portion, which is secured to and in communication The upper end, B, or flanged continuation of thelower stack-section, B,extends through and above the floor of the drum O. The drum and connected stack are made water-tight.

D represents a conical hood secured to and mounted above the upper end of the stack or flanged portion B within the drum. This hood is suiiiciently elevated above the stackopening to permit the sparks and smoke to pass out beneath it and thence upward. Ase- I'ies of supportingstri ps, d, are interposed between the upper end of the stack B and its hood D.

E represents a perforated coiled pipe. This pipe is preferably curved spirally within the drum C. The upper end of the drum is provided with a small side opening for the reception of a water-supply pipe, E. This supplypipe is connected to the upper end of theperforatcd drum-pipe E. The lower end of the pipe E is preferably closed. The floor of the drum O is provided with au opening, in which is secured the upper end of adiseharge-pipe,F. The lower end of the pipe F opens into a settling-tub. Not shown.)

The letter H represents a pipe provided on its upper end with a hopper-shaped top, H. The lower end of said pipe has secured thereto and suspended therefrom a strong conical cap, I. This cap is suspended by arms I. These arms are strong and rigidly unite the cap to the lower end ofthe pipe. The hood D is provided with a central opening for the reception ofthe pipe H. Said hood and pipe are rigidly united.

J represents a side feed-door within the stack above the drum, and K indicates a platform for the reception of ore. It is customary for an attendant to shovel the ore from the platform into the door J, which communi Cates with the furnace. The feed or supply door,being located above the furnace, compels the attendant to inhale the fumes and offensive odors which arise from the furnace. The odors, when inhaled, are injurious to health, and particularly affect the lungs. To purify the smoke and obviate these injurious results is one of the prime objects of my invention.

Water is admitted through the supply-pipe E into the perforated spirally-arranged pipe E within the drum. XVater thus admitted after passing into the pipe E passes out of the perforations thereof in a numerous series of sprays. The hood D prevents the sprayed water from falling into stack B and furnace L. The upper end of the stack projection B within the drum is sufficiently elevated above the floor of the drum to permit the accumulation of cousiderable water on said door without producing an overflow in the pipe. The body of the perforated pipe is preferably located between the mouth of the hopper and the lower edge of the hood. This arrangement is to prevent the water spray from coming in contact with the furnace-fire. Ore thrown intothe doorfallsinto the hopper, and thence through the pipe. The conical cap is suspended sufficiently below the lower end of said pipe to permit the ore to pass out freely. The cap has a double function. It

serves to spread the ore that is fed into the furnace, and also prevents the smoke, &c. from passing up through the pipe H.

It will be observed from the foregoing that thesmoke and products ofcombustion,precious metals, &c., from thefurnace must pass through the drum and through the water spray. The sparks of course are extinguished by Contact with the spray. The sparks and other particles of matter arising therewith not smoke are arrested and fall with the spray to the floor of the drum, and are thence conveyed through the pipe F to the settling-tub or other convenient receptacle. By thus forcing all the prod nets of combustion into contact with the water spray a threefold advantageous result is produced: First, the sparks areextinguished; second, the offensive odors in the smoke are destroyed, and, third, the mineral substances which arise with the products of combustion are saved.

Having thus described my invention, I claim as new and desire to secure by Letters Patent of the United States*- 1. The combination, with a smoke-stack provided with a drum in communication therewith, of a flanged continuation of the lower stack-section opening into said drum above the floor thereof, of a hood mounted above the opening in said flanged portion, said hood being provided with an opening, of a furnacefeed pipe having open ends secured in said opening, and of a perforated pipe mounted in the drum, substantially as described.

2. rllhe combination, with a smoke-stack provided with a drum in communication therewith, of a flanged continuation of the lower stack-section opening into said drum above the floor thereof, of a hood mounted above the opening in said flanged portion, said hood being provided with an opening, of a furnacefeed pipe mounted in said opening, the upper end of said feed-pipe being provided with a hopper, and of a perforated pipe mounted in the drum, substantially as described.

3. The combination, with a smoke-stack provided with a drum in communication therewith, of a flanged continuation of the lower stack-section opening into said drum above the floor thereof, of a hood mounted above the opening in said flanged portion, said hood being provided with an opening, of a furnacefeed pipe mounted in said opening, of a cap mounted immediately below the lower end of said feed pipe, and of a ,perforated pipe mounted in the drum, snbstzintially as described.

Il. The combination, with a smoke-stack provided with a drum in communication therewith, of a flanged continuation of the lower stack-section opening into said drum above the floor thereof, of a hood mounted above the openingin said flanged portion,said hood heilig provided with an opening, of afnrnaeefeed pipe mounted in said opening, and the upper end of said pipe heilig provided with a hopper, the lower end thereof being provided with a cap secured below the opening in said lower end, substantially as described.

In testimony whereofI l affix my signature in presence of two witnesses.

THOMAS \V. B ARNES.

Nitnessesz Amen A. BARNES, ARMrrirA lIonNn. 

